2018 Cadillac XTS Ignition and Tune-Up Products

Essential 2018 Cadillac XTS Ignition and Tune-Up Products

NGK – Coil on Plug Boot (Part No.58984)

Coil on Plug Boot

from

$9.49
NGK Coil on Plug Boots are built to stringent OEM tolerances, combining original equipment fit, design and outstanding durability. NGK Coil on Plug Boots are manufactured using only premium silicone and always include any required internal springs and ferrite resistors for superior performance and RFI noise suppression. Bridging the important link between ignition coil and spark plug, COP boots should always be replaced with NGK Coil on Plug Boots at the time as changing spark plugs to prevent ignition problems such as flashover.

Product Features:
  • PREMIUM GRADE SILICONE: Designed to withstand harsh environments
  • OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression
See More

NTK – Ignition Knock (Detonation) Sensor (Part No.ID0050)

Ignition Knock (Detonation) Sensor

from

$70.99
Building upon a foundation of premium full-line products established under NGK ignition and NTK oxygen sensor products, NTK’s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand: NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK’s family of automotive products are driven by extreme dedication to innovation, performance and quality. NTK is the only OE supplier with a full-line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, NTK sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. NTK sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:
  • Reinforced and extra-strength components are used to reduce chance of part failure and prevent corrosion and moisture penetration. Mounting threads match OE for easy, worry free installation.
  • NTK’s Ignition Knock Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper ignition timing. This advanced technology is used for durability, drivability and fuel economy.
  • The Ignition Knock (Detonation) Sensor monitors vibrations caused by engine knock, or detonation, to alter the ignition timing and prevent detonation.
See More

Delphi – Knock Sensor (Part No.AS10262)

Knock Sensor

from

$41.49
Manufactured to meet or exceed OE requirements; Delphi Knock Sensors help maximize engine performance with all fuels; Delphi Knock Sensors prevent against engine damage from pre-ignition knocking.

Product Features:
  • Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
  • Delphi knock sensors prevent against engine damage from pre-ignition knocking
  • Calibrated for a wide variety of frequencies to detect shifts, and adjust to provide accurate signals to help maximize engine performance
  • Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
  • Ground-isolated design with 2-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
  • Self-generating piezoelectric design requires no power to the sensor
See More

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3687)

Ignition Knock (Detonation) Sensor

from

$65.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
See More

Carquest – Ignition Coil (Part No.E1069)

Ignition Coil

from

$67.05
BWD® is an aftermarket leader, providing a premium line of engine management products. BWD® manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD® is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Integrated A/D converter and digital signal processing with a dynamically adaptive switch point improves accuracy and operation
  • Advanced circuitry protects the system from stray electro-magnetic fields and power spikes
  • Custom magnetic circuit programming calibrates the sensor while performance testing for improved timing accuracy between the target wheel and sensor output
  • Internal core made from grain-oriented electrical steel limits loss factor within magnetic circuit to reduce heat that may reduce coil endurance
  • External core made from oriented silicon steel ensures durability and longevity
  • Neodymium magnet produces max high voltage output at all speeds
  • Stainless steel spring resists corrosion
  • Tin-plated brass terminals improve electrical contact and protect against corrosion
See More

Carquest Premium – Ignition Coil Set: Meets or Exceeds OE Specifications, 6 Count (Part No.EBC1009-6)

Ignition Coil Set: Meets or Exceeds OE Specifications, 6 Count

from

$299.99
Carquest Premium ignition coil sets meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coil sets are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coil sets with an industry-leading warranty. Carquest Premium ignition coil sets are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Built by IATF 16949 certified manufacturers for consistent durability
  • Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
  • Segmented secondary bobbins to distribute high voltage and prevent shorting
  • Extensive design validation testing to ensure long-lasting reliability
  • 100% end-of-line tested to ensure proper performance
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
See More

Delphi – Ignition Coil (Part No.GN10494)

Ignition Coil

from

$76.99
Delphi OE technology ignition products are validated to match the vehicles system; OE quality replacement parts for the right fit , form and function; Delphi coils provide OE performance, durability and electromagnetic capacity level requirements.

Product Features:
  • Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
  • Delphi ignition coils are designed to operate as part of an integral engine management system to insert power into spark plugs and ensure fast starts; consistent engine performance and optimized fuel efficiency
  • Delphi uses winding process techniques to control the length of wire between adjacent windings; that’s important since more length means greater voltage differences and can create more pressure that could break down the insulation and wire coating
  • We back our ignition coil design with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues
See More

Driveworks – Coil on Plug Coil (Part No.26426)

Coil on Plug Coil

from

$66.05
Driveworks® offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:
  • Direct-fit OE replacement ensures ease of installation
  • Designed to meet OE performance
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
See More

ACDelco – Original Equipment Direct Ignition Coil (Part No.F3005386155ACD)

Original Equipment Direct Ignition Coil

from

$124.45
The ACDelco Direct Ignition Coil is a direct fit OEM replacement that contains the same high quality craftsmanship and materials as the original equipment it replaces. To protect coils from the harsh operating environment, laminations are corrosion protected, and primary and secondary coil windings often feature molded plastic protection. These laminations are similar to the OE part.

Product Features:
  • OES and a direct fit application
  • Meets or exceeds the OES specifications for durability and performance
  • High profile insulation to prevent arching
  • Radio-Frequency Interference (RFI) Suppression
  • Engineered to withstand extremes in temperatures
See More

DENSO – Original Equipment Quality Direct Ignition Coil (Part No.673-7300)

Original Equipment Quality Direct Ignition Coil

from

$85.99
As the innovator and leader in stick coil technology DENSO has conducted superior testing and inspection processes to insure the highest quality ignition coil. Don’t be fooled by imitations – look for the DENSO name to be sure you’re getting the best.

Product Features:
  • First Time Fit
  • Built to DENSO Original Equipment Standards
See More

Carquest Premium – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.EBC1009)

Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece

from

$68.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • 100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
  • Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
See More

Carquest – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.26C1033)

Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece

from

$62.99
Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • 100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
  • Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
See More

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, ITV20 (Part No.5339)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, ITV20

from

$11.79
Increased performance with World’s smallest Iridium Center Eletrode (0.4mm).

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000° Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
See More

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, LTR7IX-11 (Part No.6510)

Iridium IX Spark Plug: Single Iridium Fine Wire, LTR7IX-11

from

$14.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

Product Features:
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhance fuel efficiency, making them ideal for performance enthusiasts.
  • Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.
See More

Champion – Iridium Spark Plug: Maximum Performance, OE Replacement, RE10WYPB5 (Part No.9901)

Iridium Spark Plug: Maximum Performance, OE Replacement, RE10WYPB5

from

$7.49
Champion® Iridium – the ultimate element. This spark plug’s fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance.

Product Features:
  • Champion Iridium – Maximum Performance. Premium Spark Plug
  • Iridium center electrode delivers maximum life
  • Fine-wire center electrode and V-trimmed for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Maintains stable operating temperature under all engine loads
  • Heat-Active┐ alloy allows electrodes to reach optimal temperature quickly
See More

NGK – Ruthenium HX High Ignitability Spark Plug: PSPE Tip Design, LTR7BHX (Part No.95605)

Ruthenium HX High Ignitability Spark Plug: PSPE Tip Design, LTR7BHX

from

$14.79
NGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug; Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete fuel burn resulting in a quicker throttle response, smoother idle and better cold starts. Ruthenium center electrode provides industry leading durability.

Product Features:
  • HIGH IGNITABILITY PROJECTED SQUARE PLATINUM ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with a unique cut-back PSPE ground electrode
  • RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
  • PSPE DESIGN: Projected square platinum electrode shape of the ground electrode provides the best ignitability and service life for high heat engines
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modern vehicles using OE PSPE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
  • Enhanced Fuel Burn: Provides a more complete fuel burn, resulting in quicker throttle response, smoother idle, and better cold starts.
  • Industry-Leading Durability: Ruthenium center electrode ensures exceptional durability and longevity.
See More

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, LTR6IX-11 (Part No.6509)

Iridium IX Spark Plug: Single Iridium Fine Wire, LTR6IX-11

from

$12.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

Product Features:
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhance fuel efficiency, making them ideal for performance enthusiasts.
  • Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.
See More

Champion – Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RE10PMC5 (Part No.3032)

Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RE10PMC5

from

$4.29
Champion® Platinum Power™ spark plugs deliver powerful performance. Made from exclusive Heat-Active™ alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active™ alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
See More

NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR7E9 (Part No.90543)

OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR7E9

from

$11.99
NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
See More

DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, ITV20TT (Part No.4719)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, last 100K+ Miles, ITV20TT

from

$10.99
Durability of an OE style plug combined with Power & Torque of high performance.

Product Features:
  • 0.4mm Iridium Center Electrode: World’s Smallest Diameter that maximizes firing potential
  • 0.7mm Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
  • DENSO Patented Optimized Iridium-Rhodium Alloy Formula: Highest concentration of Iridium vs. competitors for greater durability
  • DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
  • Durability of an OE style plug combined with Power & Torque of high performance.
  • Withstands temperatures greater than 4000° Fahrenheit
  • Iridium TT
See More

Felpro – Spark Plug Tube Seal Set (Part No.ES 72393)

Spark Plug Tube Seal Set

from

$51.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
See More

2018 Cadillac XTS Ignition and Tune-Up Products

You count on your 2018 Cadillac XTS to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Ignition and Tune-Up Products. With 30 Ignition and Tune-Up Products ranging in price from $4.29 to $299.99, you’re sure to find everything you need for your 2018 Cadillac XTS.

Brands matter. If you want to shop a specific Ignition and Tune-Up Products brand, we stock 12 different brands like Autolite, E3, and ACDelco. 2018 Cadillac XTS Ignition and Tune-Up Products start as low as $4.29!

One of the best ways to find top quality OEM or aftermarket Ignition and Tune-Up Products is by asking professionals. Short of that, you can shop with confidence thanks to our 3,797 extensive product reviews on 2018 Cadillac XTS Ignition and Tune-Up Products. Some of the top-rated Ignition and Tune-Up Products products we carry are OE Fine Wire Single Platinum Spark Plug with 4.9 stars and Ignition Coil with 4.8 stars.

Did we mention you can order your Ignition and Tune-Up Products from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Ignition and Tune-Up Products inventory for your 2018 Cadillac XTS below to get started!

Top-Rated Ignition and Tune-Up Products Brands For Your 2018 Cadillac XTS

Trusted Ignition and Tune-Up Products OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2018 Cadillac XTS running right for years to come. In our inventory you’ll find brands like Autolite, E3, ACDelco, and even more.

Popular ACDelco Ignition and Tune-Up Products

You’ll find popular ACDelco brand products across Spark Plugs. All are waiting to get your 2018 Cadillac XTS back on the road. Some of the top-rated ACDelco products in these categories are:

Top-Rated Autolite Iridium Ignition and Tune-Up Products


If Autolite Iridium are what you’re looking for, our inventory holds plenty. We stock Autolite Iridium brand Ignition and Tune-Up Products for your 2018 Cadillac XTS, and some of our most reviewed Autolite Iridium parts include:

FAQs for 2018 Cadillac XTS Ignition and Tune-Up Products

What are the most purchased Ignition and Tune-Up Products for the 2018 Cadillac XTS?

Out of 30 Ignition and Tune-Up Products for the 2018 Cadillac XTS, the most popular in our inventory are:
Iridium IX Spark Plug: Single Iridium Fine Wire, LTR6IX-11
from $12.99
This product is not rated
Iridium IX Spark Plug: Single Iridium Fine Wire, LTR6IX-11
Spark Plugs

What are the top-rated 2018 Cadillac XTS Ignition and Tune-Up Products?

Top-rated Ignition and Tune-Up Products for your 2018 Cadillac XTS based on customer reviews/ratings are:
OE Fine Wire Single Platinum Spark Plug
from $4.29
(16)
OE Fine Wire Single Platinum Spark Plug
“Great!”
Ignition Coil
from $67.05
(9)
Ignition Coil
“No miss fires. Works as intended.”
OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR6E11
from $14.99
(5)
OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR6E11
“Installed and worked great”